DE102012108432B4 - Anti panic cylinder - Google Patents

Abstract

Locking cylinder (1) for a panic lock, with
at least one housing (10) having a cylindrical portion (11) to which a web (12) is attached,
at least one cylinder core (40) rotatable relative to the housing (10) about an axis of rotation (42),
- At least one eccentric piece (30) which is connected to the cylinder core (40), and
a channel (14) made as a bore (14) passing radially through the web (12), with 'radially' referring to the axis of the cylindrical portion (11),
- At least one return means (60, 71, 62) which sits in the radial axis of rotation arranged channel (14) of the housing (10) and acts at least indirectly on the eccentric piece (30),
wherein upon rotation of the cylinder core (40) from a rest position, the return means (60, 71, 72) generates a restoring force, and
the channel (14) is closed to the outside by a pressure plate (15) or the return means (71).

Description

Technical area

The invention relates to a lock cylinder for a panic lock, comprising at least one housing, at least one cylinder core rotatable relative to the housing about a rotation axis, at least one eccentric piece connected to the cylinder core, a channel and at least one return means disposed in the channel of the housing sits so that it exerts a restoring force upon rotation of the cylinder core from a rest position.

State of the art

To close doors u.a. so-called box locks used, which are also referred to only briefly as locks in the jargon. Caste locks are usually inserted from the side facing the frame longitudinal side in a door leaf and bolted to it. The box lock usually has a latch and a locking latch, which can each engage in complementary recesses of a door frame. The trap can be operated by a pusher called the doorknob. The locking bolt is extended by a separate component, namely a so-called lock cylinder in the corresponding recess or retracted into the box lock. The lock cylinder usually has an orthogonal to the door leaf arranged shaft with a projection, which is also referred to as a lock bit. If the shaft is rotated, e.g. by a key rotatably connected to the shaft or a closing knob, then the projection engages in a recess of the locking bolt or an associated mechanism and depending on the direction of rotation of the shaft pulls the cam back or pushes it forward.

To close emergency exits, box locks with a so-called panic function are used, which are also called panic locks or anti-panic locks. Such panic locks ensure that the emergency exit is closed, so that no one can intrude without authorization, but that at the same time anyone can open the door from the inside to leave the building in case of danger. When the inner door latch of a door equipped with such a panic lock is pressed, not only the usual way, but also the latch is pulled in, so that the door always, if necessary, i. especially without authorization by e.g. leave a key or a transponder card open from the inside. For this purpose, the inner door latch can be coupled, for example, with a coupling part, which shifts the coupling part vertically downwards upon actuation of the door inside door knob. The coupling part usually has an elongated recess whose longitudinal axis is inclined at approximately 45 ° to the vertical. The recess serves as a guide rail for a pin of the locking bolt. This will cause a vertical displacement of the coupling part, e.g. upon actuation of the inner door latch, converted into a horizontal displacement of the locking bolt and vice versa.

In order for the panic function, i. the retraction of the door latch and locking latch works reliably, the lock bit of the non-actuated lock bar ring must always point downwards, i.e. in the so-called "6 o'clock position" ± 90 °, better ± 30 °, because otherwise there is a danger that the coupling part can not be pushed down, because his way through the cam is locked. Shows the cam, for example, obliquely upwards on the coupling part, then the way of the coupling part is locked down by the cam when pressing the door handle. Accordingly, the coupling part can not withdraw the locking bolt in the so-called open position. The (anti) panic function is not guaranteed.

Panic locks with mechanical locking cylinders may therefore only be used with locking cylinders, from which the key can only be removed if the lock bit assumes a permissible position, ie the "6 o'clock position" ± 30 °. However, it sticks e.g. from the outside accidentally a key, so the panic function is not guaranteed. In electromechanical locking systems where, following authorization, e.g. is coupled rotatably by a transponder card, a rotary knob with the Schließbartring a lock cylinder, the position of the cam is not defined in the rule and that neither in the coupled nor in the decoupled state. Therefore, such electromechanical locking systems must not be combined with the described panic locks. Some manufacturers of electromechanical locking systems, therefore, provide a spring mechanism that always rotates the lock bit after a closure in an allowable position. Locking systems with such a spring mechanism are also referred to as panic cylinders or anti-panic cylinders.

The term "cylinder" in lock cylinder as well as panic cylinder or anti-panic cylinder has historical reasons; today have lock cylinder in Continental Europe, a housing with a cylindrical portion to which a parallel to the cylinder axis extending web is attached. In the United Kingdom, the United States and Scandinavia, other types of housing for lock cylinders can be found. The term lock cylinder referred to in the context of this patent application, a locking system with a housing and a locking member, such as a lock bit, the case of an authorization by means of a possibly electronic key from the user can be rotated to actuate a latch and / or a latch of a lock and / or also to operate a switch.

In the lock cylinders commonly used in continental Europe, the lock bit rests in the neutral position in a recess of the attached bridge. This position corresponds to the usual 6h position in the usual installation position, in which the web points down. Below is referred to this usual installation position, but of course, the cylinder can be installed in other mounting positions.

EP 2 088 263 A1 shows a so-called panic cylinder. This panic cylinder has a housing with a cylindrical section to which a bridge is attached. In the cylindrical portion, a cylinder core is rotatably mounted. The cylinder core has a cam, which is pivoted upon rotation of the cylinder core about its longitudinal axis, so as to actuate the locking latch or the latch of a lock. Thus, the cam reliably returns to the 6h position, the cam is rotatably connected to a cylinder axis eccentric crank pin. The force of a spring mounted in a chamber of the housing acts on the crankpin. In the chamber, the spring is attached to a parallel to the longitudinal axis threaded stud. Upon rotation of the cam from the rest position this takes the crank pin, which rotates about the longitudinal axis of the cylinder core, whereby the spring is tensioned until the eccentric reaches the neutral position opposite the dead center. Therefore, the cam is always swung back by the force of the spring in its rest position.

DE 10316522 discloses a return mechanism for a closing shaft on which a lock bit is seated. The shaft has an eccentric section on which a ball bearing sits. On the outer bearing shell of the ball bearing acts directly a compression spring which sits in a blind bore of a housing. By the compression spring therefore the eccentric portion is rotated back in the unloaded state of the shaft and thus also the cam after each rotation of the shaft in a defined rest position.

EP 2 345 782 A1 shows a lock cylinder for a panic lock with a cylinder core, which is rotationally connected to a Schließbartring. On the cylinder core sits a sleeve which is non-positively connected to the cylinder core. The sleeve has a bevelled end face in the axial direction, on which a spring-loaded roller of an actuating element acts. The actuator sits axially displaceable on a parallel to the cylinder longitudinal axis rod arranged with an abutment for a return spring, which acts on the actuator. About the rod, the force of the return spring is transferred to another actuator, which rests with another roller on the back of the sleeve, so that the sleeve between its tapered end face and the rotationally symmetrical back is clamped.

WO 2008/095528 A1 discloses a lock cylinder for a panic lock with a Schließbartring which is reset by a spring mechanism in its rest position. For this purpose, the lock cylinder has two axially juxtaposed and axially displaceable Rückdreheinrichtungen with each other mirror-inverted cams over which they act on a cam shaft and thus on the Schließbartring. A rotation of the cam shaft thus leads to an axial displacement of the reversing devices, counteract the axially acting return springs.

DE 10 2008 056 627 C5 discloses various reset means for a lock bar of a cylinder core. Among other things, it is proposed that upon rotation of the cylinder core a coil spring ( 18 ) or a leg spring ( 19 ) is stretched over an eccentric pin of the cylinder core. The coil spring sits obliquely to the cylinder longitudinal axis in a housing recess and is connected via a deflected Bowden cable with the eccentric. In the variant with the leg spring engages a free leg of the leg spring on a radially guided spool with approximately rectangular cross-section.

Presentation of the invention

The invention is based on the observation that the known panic cylinders, in particular those in the DE 10 2008 056 627 C5 shown, expensive to manufacture and / or unreliable.

The invention has for its object to provide an easy to manufacture lock cylinder with a reliably returning to a predetermined position cam.

This object is achieved by a lock cylinder according to claim 1. Advantageous embodiments of the invention are specified in the subclaims.

The lock cylinder has, as usual, at least one housing and at least one cylinder core which can be rotated relative to the housing and which is non-rotatably connectable to a closing operation, eg a cam. The cam can of course be part of the cylinder core. The cylinder core is not necessarily cylindrical, but as usual rotatably mounted in the housing. The cylinder core is with a Eccentric rotatably coupled so that upon rotation of the cylinder core, the eccentric moves around the axis of rotation of the lock bit. The connection or coupling between the eccentric and the cylinder core and thus also with the cam can be direct or indirect. In particular, the two parts can also be integral. Alternatively, the eccentric piece can preferably be used in parallel but offset from the axis of rotation of the cylinder core rotatably or rigidly in two sections of the cylinder core. The lock cylinder has at least one return means, which sits in a recess of the housing and acts at least indirectly on the eccentric, that is arranged in an at least indirect operative connection between the eccentric and the housing. Upon rotation of the cylinder core, or the Schließbarts from a rest position, this takes place against a restoring force, or against a restoring torque of the return means, for example a return spring, which is compressed, for example. The resulting spring force acts as a restoring force on the cylinder core or the cam to turn it back to a rest position. The tensioned spring thus exerts a restoring torque on the cylinder core and / or the cam via the eccentric piece. Unlike the prior art, the recess is not from the front side (see, eg EP 2 088 263 A1 ) or laterally (cf. DE 10 2008 056 627 C5 ) introduced into the housing chamber, but a channel which is arranged radially to the axis of rotation of the cam. Such a channel is much cheaper to manufacture, namely as a simple bore. The channel is closed to the outside by a pressure plate. The spring is supported at least indirectly, preferably directly on the pressure plate. The components of the lock cylinder are much cheaper to manufacture than those of the antipanic cylinder according to the prior art. In addition, the lock cylinder is much easier to assemble.

In an alternative embodiment, the return means may be a fluid that is compressed by the eccentric movement of the eccentric from the rest position. For this purpose, for example, the channel may be a cylinder of a gas pressure element. The gas pressure element has a piston which is in operative connection with the eccentric piece. This can e.g. done by a connecting rod. Alternatively and preferably, the piston bears against the eccentric piece or a bearing seated thereon. In this case, the piston preferably has a running surface for the eccentric piece or the bearing seated thereon. An example of such a tread is described below in a sleeve for intercepting a return spring. The piston can also be designed as regards the tread. Preferably, the pressure plate and the housing are connected directly and non-positively with each other. This can preferably be done by pressing or gluing the housing and pressure plate. Alternatively, the pressure plate may also have a thread which is screwed into a complementary thread of the housing. For example, the pressure plate may be in the form of a screw, e.g. a grub screw, which is screwed into a thread of the channel. This allows you to easily adjust the spring preload. Even if you use a screw as a pressure plate, the production is much cheaper, because you can rely on standardized screws and no turning screw.

The eccentric is preferably an eccentric of a crankshaft, which is rotatably connected to the cylinder core and the cam and, for example, rotatably supported with the cylinder core against the housing. As a result, the force exerted on the eccentric piece by the spring can be absorbed without a tilting moment acting on the eccentric piece or the locking bit. A resulting from a tilting of the eccentric and / or cylinder core or Schließbarts resulting jamming of the cylinder core or cam is therefore excluded. The cam and cylinder core therefore return reliably to their rest positions.

Preferably, the end of the restoring means facing the eccentric piece is seated in a sleeve which, on the end facing the eccentric piece, has a curved, for example concave, running surface for a bearing arranged on the eccentric piece. This allows a low-friction rotation of the eccentric relative to the spring and thus reduces the angular range of the astable balance at the lower reversal point of the Exzenterstücks, which is also referred to as "dead center" to a minimum. Even if the eccentric would remain in this dead center, sufficient for the operation of the door handle inevitably connected vibration to ensure that the eccentric and thus the cam reliably return to its rest position. About the curvature of the tread, the force acting upon rotation on the cylinder core or cam can be adjusted force profile. Particularly preferably, the tread in the region in which the eccentric abuts when it is at its lower reversal point, convexly curved.

As a result, the angular range of the astable Gelichgewichts at the lower reversal point is further reduced.

In an alternative embodiment, two magnets serve as a return element. A first of the two magnets is fixed in the channel, so for example glued or pressed into the housing. The polarity of the first magnet is preferred arranged parallel to the longitudinal direction of the channel, that is, a first pole, for example, magnetic north points in the direction of the axis of rotation of the cam and the other pole, in the example magnetically south of her away. Another second magnet is supported on the eccentric at least indirectly. Particularly preferably, the second magnet is slidably disposed in the channel, wherein its polarity, relative to the longitudinal axis of the channel, is oriented inversely to the first magnet, that is, the first and the second magnet repel each other.

Preferably, the second magnet is seated in a preferably paramagnetic sleeve, which is arranged displaceably in the channel and guides the second magnet. The sleeve is preferably closed on its side facing the cam axis, so that the second magnet is supported on the sleeve. The eccentric piece facing side of the sleeve preferably has a tread for a seated on the eccentric bearing, such as a ball bearing. As a result, a reliable, inexpensive and easy to install radial guide (radially refers here to the axis of rotation of the cam) of the second magnet realized. Preferably, with a rotation of the cam, the sleeve in the channel through the eccentric axially to the direction of the channel, ie radially relative to the axis of rotation of the cylinder core or cam, the sleeve intercepts the spring radially to the longitudinal axis of the channel. The sleeve thus runs, for example, like a piston in the channel. The return means will not be like the EP 2 088 263 A1 pivoted about a mounting pin, but is only compressed depending on the direction of rotation of the cylinder core or it expands. As a result, a reliable reset with ease of mounting is achieved particularly well.

The housing has, as usual, a cylindrical section to which a web is attached. Then, the channel is made very simple as a the web radially (relative to the axis of the cylindrical portion) passing through hole. The inner wall of the bore can then possibly serve as a sliding surface for the sleeve described above. For assembly, as usual, a cylinder core with the cam and the eccentric pin is inserted into the cylindrical housing section. Subsequently, if necessary, the sleeve, and then the return means, e.g. a compression spring are introduced into the channel. Subsequently, the channel is closed by means of the pressure plate. If the two abovementioned magnets are used as the return means, one or both of the magnets is inserted into the channel with or after the sleeve. Subsequently, another magnet is inserted into the channel. As a captive and abutment of the channel can be closed by the pressure plate described above. In this case, a fixation of the magnet in the channel is not required. Preferably, however, the further magnet itself is used as a plug for the channel, i. inserted therein and fixed therein, e.g. glued into the channel or pinched by deformation of the lower end of the channel therein.

list of figures

• 1 zeigt eine Seitenansicht eines Schließzylinders,
• 2 zeigt einen Schließzylinder im Längsschnitt,
• 3 zeigt eine Explosionszeichnung eines Teils des Schließzylinders aus 2,
• 4 zeigt einen weiteren Schließzylinder im Längsschnitt,
• 5 zeigt eine Explosionszeichnung eines Teils des Schließzylinders aus 4.

The invention will now be described by way of example without limitation of the general inventive idea by means of embodiments with reference to the drawings.

• 1 shows a side view of a lock cylinder,
• 2 shows a lock cylinder in longitudinal section,
• 3 shows an exploded view of a part of the lock cylinder 2 .
• 4 shows a further lock cylinder in longitudinal section,
• 5 shows an exploded view of a part of the lock cylinder 4 ,

1 shows a side view of a lock cylinder 1 , The illustration of the lock cylinder 1 corresponds to a side view of both the embodiment of the 2 and the 3 as the embodiment of the 4 and 5 , The lock cylinder 1 in 1 to 5 has a housing 10 with a cylindrical section 11 and a jetty attached to it 12 whose longitudinal axis is parallel to the cylinder axis. In the cylindrical section 11 sits a rotatable cylinder core 40 (see. 2 . 4 ) with a cam 20 holding a lockable ring 21 is arranged. The cambar 20 is located in a recess of the bridge 12 , The position shown is the preferred rest position of the lock bit 20 , The cambar 20 is with a handle 2 (see. 1 ) rotatably coupled. Upon rotation of the handle 2 becomes the cambar 20 around the axis of rotation 42 the handle 2 that of the cylinder core 40 is rotated, so panned more precisely formulated (see also 2 and 4 ). The rotational movement of the handle 2 is about one in the cylindrical housing portion 11 mounted connecting shaft 39 transferred to a kind of "crankshaft", the two receiving disks 32 has between them an eccentrically arranged bolt, so an eccentric 30 sitting. The "crankshaft" in turn is via a coupling element 36 with the lockable ring 21 rotatably coupled. The handle does not have to be rigidly coupled to the cam. Mostly it is connected via an electromagnetic clutch with the cam. A circuit then checks an electronic stored key, for example, which can be stored in a RF-ID transponder. If the key is justified, the handle is used by the electromagnetic clutch rotatably connected to the lock bit. Non-rotating means not necessarily rigidly connected, but a transmission of an actuating torque, eg a torque must be possible. So after a deflection of the cam 20 from its rest position this returns to the rest position, is in the cylindrical section 11 of the housing 10 the eccentric piece 30 , So in the example shown, a bolt offset parallel to the axis of rotation 42 arranged. The eccentric piece 30 sits with each of its two ends in a respective recess of one of the receiving disks 32 , The recording discs 32 support themselves over bearings 32 , Preferably ball bearing, on the inner wall of the cylindrical portion 11 from. On the eccentric piece 30 sits between two spacers 33 a warehouse 31 , preferably a ball bearing 31 , In the area of the warehouse 31 has the case 10 one radial to the axis 42 arranged channel 14 which can easily be inserted as a bore. The channel 14 connects the outside of the case 10 with the hollow cylindrical section 11 , In the channel 14 sits a reset element in the 2 is this a feather? 60 , which are connected to a channel 14 closing pressure plate 15 supported. In the 4 the restoring element is formed by magnets which are linearly displaceable relative to each other. This will be explained in detail on the basis of 4 and 5 explained.

The lockable ring 21 and thus the cam 20 are over at least one coupling element 36 and the Schließbartseitige bearing disc 32 rotatably with the eccentric piece 30 connected (cf. 2 ). Upon a turn of the lock bit 20 out of his rest position becomes the spring 60 curious; excited. The warehouse is rolling 31 over a concave tread 52 a running rail (see. 3 ) at the upper end of the sleeve 50 with which the sleeve 50 at the camp 31 abuts. The sleeve therefore moves only on a radial to the axis of rotation 42 and leads the spring 60 , This results in a defined spring force of the spring 60 as a function of the angular position of the cylinder core 40 and thus the lock bit 20 , which the eccentric piece 30 and thus the cylinder core 40 velvet camper 20 drives back into the rest position shown.

The lock cylinder after 2 consists of only a few and essentially simplest to finished parts, as in 3 indicated, can be mounted in a very short time. After inserting the printing plate 15 in the channel 14 , The pressure plate can be clamped by a force acting laterally on the web.

The basic structure of the in the 4 and 5 Pictured panic cylinder 1 is similar to the one based on 2 and 3 explained. As far as reference is made to the corresponding description, wherein the same or similar parts have the same reference numerals in all figures. It is therefore only discussed the differences between the two embodiments: The structure of the anti-panic cylinder 1 the 4 and 5 differs from the antipanic cylinder of 2 and 3 in that instead of the pressure plate 15 a first magnet sits in the channel and is supported on the wall thereof. In the example shown, the first magnet is seated 71 like a plug in the canal 14 and closes it to the outside, in the example shown below (see. 4 ). The first magnet 71 was first in the channel 14 used (see. 5 ) and then by deforming the lower end of the channel 14 fixed in it. The north and south pole connecting axis of the magnet is at least approximately identical to the longitudinal axis 16 of the canal 14 , As in the embodiment of the 2 and 3 runs in the channel 14 a sleeve 50 , The sleeve 50 has a running track with a concave tread 51 with whom she is at a warehouse 31 abuts, which sits on the eccentric piece. In the sleeve 50 sits a second magnet 72 whose polarity is the polarity of the first magnet 71 is opposite. The two magnets 71 . 72 therefore repel. Thus acts on the sleeve 50 one in the direction of the axis of rotation 42 acting force over the track 52 and the camp 31 on the eccentric piece 30 is transmitted. This force thus acts as a restoring force on the eccentric piece 30 and rotates the otherwise unloaded cylinder core and thus the lock bit 20 in the rest position shown.

LIST OF REFERENCE NUMBERS

1

lock cylinder

2

handle

10

casing

11

cylindrical housing section

12

web-like housing section

14

Channel / bore

15

printing plate

16

Longitudinal axis of the channel / bore 14 / Radial

20

Cam

21

Cam ring

30

Eccentric piece / eccentric pin

31

Bearings / ball bearings

32

Receiving discs for eccentric piece

33

spacers

34

Bearings / ball bearings

36

coupling member

37

Bearing (here sleeve)

38

coupling member

39

connecting shaft

40

cylinder core

42

axis of rotation

50

shell

52

tread

60

feather

71

second magnet

72

first magnet

81

second magnet

82

first magnet

Claims (5)

Locking cylinder (1) for a panic lock, with at least one housing (10) having a cylindrical portion (11) to which a web (12) is attached, at least one cylinder core (40) rotatable relative to the housing (10) about an axis of rotation (42), - At least one eccentric piece (30) which is connected to the cylinder core (40), and a channel (14) made as a bore (14) passing radially through the web (12), with 'radially' referring to the axis of the cylindrical portion (11), - At least one return means (60, 71, 62) which sits in the radial axis of rotation arranged channel (14) of the housing (10) and acts at least indirectly on the eccentric piece (30), wherein upon rotation of the cylinder core (40) from a rest position, the return means (60, 71, 72) generates a restoring force, and the channel (14) is closed to the outside by a pressure plate (15) or the return means (71). Lock cylinder after Claim 1 , characterized in that the pressure plate (15) and / or the return means (71) are directly and non-positively connected to the housing (10). Lock cylinder after Claim 2 , characterized in that the pressure plate (15) and / or the return means (71) with the housing (10) are pressed or screwed into the housing. Lock cylinder according to one of the preceding claims, characterized in that the eccentric is an eccentric pin (30) of a crankshaft, which is rotatably mounted against the housing (10). Lock cylinder according to one of the preceding claims, characterized in that the eccentric piece (30) facing the end of the return means (60, 72) in a sleeve (50) sits at its the eccentric (30) end facing a preferably concave tread (52 ) has for a on the eccentric piece (30) arranged bearing (31).

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